Sizing and Geometry

As the LittleBig changes between its three modes, it goes from the equivalent size of a standard 12 inch balance bike, to that of a 16 inch pedal bike. Both the saddle height and the handlebar reach increase, allowing for your child’s additional growth. As well as these frame adjustments, the saddle, handlebars and stem are like those you would find on an adult’s bike, so can independently adjusted to further fine tune the bike’s fit. To view the LittleBig parts list, click here.
Overlay of LittleBig in balance bike mode and pedal bike mode

Starting off with the balance bike

In order to use a balance bike safely, it’s important that the bike is the correct fit for your child. Your child’s inside leg length should be the same or slightly longer than the minimum saddle height, which for the LittleBig is 37cm/14inches. It is important that your child can sit on the saddle with their feet comfortably on the ground. This will ensure that they have a successful start on their new bike.

How to measure

Measure your child’s inside leg with shoes on, from floor to top of inseam. The inseam length should be at least the same as the minimum saddle height (370mm), or preferably a little longer.

Using the LittleBig in pedal bike mode

Once your child is proficient at balancing, it’s time to fit the pedals! Unlike with the balance bike, your little one doesn’t necessarily need his/her feet flat on the ground. With the pedal bike it’s okay for kids to just reach the ground using the balls of their feet while stationary, this will give a more comfortable position when pedalling. As a rule of thumb, when using the pedal bike, the saddle can be an inch taller than the inseam leg length, i.e. 1 inch/2cm taller than when using the balance bike. If the saddle is too low while pedalling your child’s knees will bend too much at the top of the stroke which is uncomfortable and tiring. There’s a reason while they riders in the Tour de France seem to have their saddles raised to the sky!

LittleBig dimensions - how big does it grow?

Geometry Chart – cm/ degreesLittle Balance BikeBig Balance BikeBig Pedal Bike
Min Saddle Height (cm)374751 (or 47mm with optional short seatpost fitted)
Max Saddle Height (cm)455555
Top Tube Length (cm)343939
Head Angle (degrees)667070
Seat Angle (degrees)787070
Wheelbase (cm)696767
Geometry Chart – inches/ degreesLittle Balance BikeBig Balance BikeBig Pedal Bike
Min Saddle Height (inches)141819.5 (or 18" with optional short seatpost fitted)
Max Saddle Height (inches)182222
Top Tube Length (inches)13.515.515.5
Head Angle (degrees)667070
Seat Angle (degrees)787070
Wheelbase (inches)27.526.826.8

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